Zinc Rich Oil for Flat Tappet Cams
I’m only here for the comments, lolol! But in all seriousness, I won’t give any recommendations other than to read the tech pages on Hughes Engine’s website about flat tappet cams and break in oils and draw your own conclusions. There are also links to some charts that show recommended viscosities to bearing clearances according to block or rod material. But in all seriousness, I concur with RRR’s endorsement of Lucas hot rod oil. I am afraid that even something as simple as the proper oil has become a “get what you pay for” game at this point...